diff --git a/app/controllers/games_controller.rb b/app/controllers/games_controller.rb
index 9ce95843d..b83431a82 100644
--- a/app/controllers/games_controller.rb
+++ b/app/controllers/games_controller.rb
@@ -768,9 +768,8 @@ class GamesController < ApplicationController
   # REDO:需要添加详细的说明
   def cost_time
     #return if @game.status >= 2
-    cost_time = (Time.now.to_i - @game.play_time.to_i) + @game.cost_time.to_i
-    @game.update_attributes(cost_time: cost_time, play_sign: 0)
-    render_ok
+    cost_time = (params[:time].to_i < 0 ? 0 : params[:time].to_i) + @game.cost_time.to_i
+    @game.update_attribute(:cost_time, cost_time)
   end
 
   # 同步challenge的更新时间
@@ -940,13 +939,6 @@ class GamesController < ApplicationController
     game.update_attributes(status: 0, open_time: Time.now) if game.open_time.blank? || game.status == 3
     # 开启实训更新myshixuns的时间，方便跟踪用于的学习进度。
     game.myshixun.update_column(:updated_at, Time.now)
-    # 如果异常关闭的话 更新完关卡的时间
-    if game.status < 2 && @game.play_sign == 0
-      @game.update_attributes(play_time: Time.now, play_sign: 1)
-    elsif game.status < 2 && @game.play_sign == 1
-      cost_time = Time.now.to_i - (@game.play_time.presence || Time.now).to_i + cost_time.to_i
-      @game.update_attributes(play_time: Time.now, cost_time: cost_time, play_sign: 1)
-    end
   end
 
   # vnc连接
diff --git a/db/migrate/20191119021844_add_close_browser_time_for_games.rb b/db/migrate/20191119021844_add_close_browser_time_for_games.rb
deleted file mode 100644
index f1d694fea..000000000
--- a/db/migrate/20191119021844_add_close_browser_time_for_games.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-class AddCloseBrowserTimeForGames < ActiveRecord::Migration[5.2]
-  def change
-    add_column :games, :play_time, :timestamp
-    add_column :games, :play_sign, :integer, :default => 0
-  end
-end